Elevator.



L. KANTOR.

ELEVATOR.

APPLIGATION FILED JULY 31, 1909. %& 11. m Patented Feb. 1, 1910.

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L. KANTOEH ELEVATOR. APPLICATION FILED JULY 31, 1909.

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Patent% Feb. 1, 1910.

Swc'entoa LOUIS KANTOB, OIEJDAY'ION, OI-IIO.

ELEVATOR.

To all whom it may concern:

Be it known that I, LOUIS KAN'roR, a subject of the King of Hungary,residing at Dayton, in the county of Montgomery and State of Ohio, haveinvented certain new and useful Improvements in Elevators, of which thefollowing is a specification, reference being had therein to theaccompanying drawing.

This invention relates to safety appliances for elevators and the objectthereof is to provide means in a manner as hereinafter set forth whichis automatically thrown into operation when the elevator cable breaks toprevent the falling of the elevator cage.

A further object of the invention is to provide a safety appliance forelevators which shall be simple in its construction, strong durable,efficient in its use, readily set up with respect to the elevator cageand inexpensive to manufacture.

With the foregoing and other objects in view this invention consists ofthe novel construction, combination and arrangement of parts ashereinafter more specifically described and illustrated in theaccompanying drawings, wherein is shown the preferred embodiment of theinvention, but it is to be understood that changes, variations andmodifications can be resorted to, which come within the scope of theclaim hereunto appended.

In the drawings wherein like reference characters denote correspondingparts throughout the several views, Figure 1 is an elevation partly insection of an elevator shaft and also showing a cage, the latter beingartly in section and further showing the a aptation of the safetyappliance in accordance with this invention with respect to the cage andshaft, Fig. 2 is a cross sectional view taken on the line XX, Fig. 1,Fig. 3 is a view somewhat similar to Fig. 1, but showing the supportingcable of the ele vator as broken and the safety appliance in operativeposition to prevent the falling of the cage.

Referring to the drawings by reference characters 1 and 2 denote a pairof vertically-extending rails connected together at their tops by across bar 3 and braced with respect to the cross bar 3 by brackets 1,each of the rails 1, 2 being formed on its inner face with teeth 5having a fiat face 6 and an elongated beveled face 7, the beveled faceof one tooth terminating in the inner end of Specification of LettersPatent.

Application filed July 31, 1909.

Patented Feb. 1., 1910.

Serial No. 510,677.

the flat face of the lower tooth. The flat faces 6 constitute supportingledges which are engaged by the safety appliance to prevent the cagefrom dropping if the elevating cable 8 becomes slack or broken. Therails 1, 2 constitute guide rails for the elevator cage and the cage isprovided with side rails 9 10 which overlap the rails 1, 2 and the saidside rails 9 and 10 being connected together by a cross rail 11 whichcarries the safety appliance.

The safety appliance comprises a pair of spring controlled lockingcatches 12, each provided with a longitudinally-extending elongated slot13, a beveled outer end 14:, a beveled inner end 15 which is reversedwith respect to the end 14, and a substantially i11- verted V-shapednotch 16 adjacent said inner end. The catches 12 when moved to operativeposition extend laterally with respect to the rail 11, but said catches12 move in opposite directions with respect to each other. The catches12 are mounted in the rail 11, a recess 17 being provided for suchpurposes, said recess opening into a passage 18 into which extends thecatch 12. The top Wall 19 of the passage 18 constitutes a support forthe catch when the latter is projected. The catches 12 are connected tothe rail 11 by pins or lugs 20 which extend through the slots 13, thepins or lugs 20 furthermore limiting the outward movement as well as theinward movement of the catches 12. Depending from each of the catches 12is a lug 21 having one end of an expansible and contractible spring 22connected thereto, the other end of sald spring 22 being secured to aneye 23 carried by the rail 11. When the catches are in the position asshown in Fig. 1 the springs 22 are expanded so that when the catches arereleased the springs 22 will contract and project the catches 12 againstthe toothed rails so that the catches will en gage the ledges formed bythe flat faces 6 of the teeth to prevent the elevator cage from falling.

The catches 12 are maintained in an inoperative position by a lockingarm 24: provided at each end with a hook 25 and which engages in thenotch 16 of the catch as clearly shown in Fig. 1. The locking arm 24 ismounted upon a vertically-extending Shiftable rod 26, the latterextending through the rail 11 and a yoke 27 and coupled as at 28 to theelevator cable 8. The rod 26 also carries a boss 30 which abuts againstthe arm 24 and is engaged by'an expansible and contractible spring 31interposed between the boss and the yoke 27 When the cable 8 is taut thespring 31 will be held in a state of compression and the locking armmaintained in engagement with the notches of the catches. To prevent therod 26 from pulling through the rail 11 the lower end of the rod isprovided with a nut 32 which engages the cross piece 33 carried by therail 11. When the cable 8 is tautas before stated the spring 31 will beunder a state of compression and the arm 24 will have the hooked ends 25thereof in engagement with the notches of the catches so as to maintainthe catches in an inoperative position, but if through any cause thecable 8 becomes slack or breaks, the spring 31 will expand and force thelocking arm downwardly whereby the hooked ends 25 Will be moved out ofengagement with the catches 12, thereby re-- leasing the springs 22,these latter contracting and forcing the catches 12 to the positionshown in Fig. 3.

\Vhat I claim is A safety appliance for elevators comprising a pair ofautomatically projectable catches each having a beveled inner face and abeveled outer face and further having in proximity to the beveled face aV-shaped notch, a spring fixed at one end and connected at its other endto a catch, an arm provided with means engaging in said notches formaintaining said catches in an inoperative position and against theaction of said springs, said arm when released from the catchespermitting the latter to be automatically projected to operativeposition.

In testimony whereof I aflix my signature in the presence of twowitnesses.

LOUIS KANTOR. Witnesses PETER HARDNAY, J. D. l\losKowITz.

